Abstract
Potted miniature roses ( Rosa × hybrida `Confection ' & `Meijikatar') were treated at the end of each 8 hour photoperiod with 30, min of red (R) or far-red (FR) light for 21 days. These light treatments convert phytochrome to the Pfr and Pr forms respectively. Plants were paper sleeved and stored in cardboard boxes at 16°C for 5 days to simulate postharvest shipping conditions. `Meijikatar' plants treated with FR light showed more postharvest leaf chlorosis than plants treated with R light or controls. `Meijikatar' plants treated at the end of each 12 hour photoperiod with FR light exhibited more postharvest leaf chlorosis than plants treated with R light. There were no differences in postharvest leaf chlorosis between plants treated with FR light followed by R light or plants treated with R light followed by FR light. These results suggest that an avoidance of end-of-day FR light will result in less postharvest leaf chlorosis in potted roses.
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Claims 4
Claim · model-written summary
Meijikatar roses given far-red light after an eight-hour photoperiod had more postharvest leaf chlorosis than red-light plants or controls.
- Taxon
- Rosa × hybrida
Rosa hybrid cultivare0 - Material
- `Meijikatar'e1
- Treatment
- FR lighte1
- Outcome
- postharvest leaf chlorosise1
- Direction
- moree1
- Comparator
- R light or controlse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potted miniature roses ( Rosa × hybrida `Confection ' & `Meijikatar')”
e1“`Meijikatar' plants treated with FR light showed more postharvest leaf chlorosis than plants treated with R light or controls”
Claim · model-written summary
After a 12-hour photoperiod, Meijikatar roses given far-red light had more postharvest leaf chlorosis than those given red light.
- Taxon
- Rosa × hybridaRosa hybrid cultivare0
- Material
- `Meijikatar'e1
- Treatment
- FR lighte1
- Outcome
- postharvest leaf chlorosise1
- Direction
- moree1
- Qualifier
- 12 hour photoperiode1
- Comparator
- R lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potted miniature roses ( Rosa × hybrida `Confection ' & `Meijikatar')”
e1“`Meijikatar' plants treated at the end of each 12 hour photoperiod with FR light exhibited more postharvest leaf chlorosis than plants treated with R light”
Claim · model-written summary
The two orders of far-red and red light did not differ in postharvest leaf chlorosis.
- Taxon
- Rosa × hybridaRosa hybrid cultivare0
- Treatment
- FR light followed by R lighte1
- Outcome
- postharvest leaf chlorosise1
- Direction
- no differencese1
- Comparator
- R light followed by FR lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potted miniature roses ( Rosa × hybrida `Confection ' & `Meijikatar')”
e1“There were no differences in postharvest leaf chlorosis between plants treated with FR light followed by R light or plants treated with R light followed by FR light”
Claim · model-written summary
Avoiding end-of-day far-red light is suggested to reduce postharvest chlorosis in potted roses.
Verbatim
e0“an avoidance of end-of-day FR light will result in less postharvest leaf chlorosis in potted roses”
The same questions in other papers
light · physiology: pigments · Rosa hybrid cultivarPositive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.